Commit fe79a9ba authored Feb 03, 2014 by Soren Brinkmann Committed by Thomas Gleixner Feb 07, 2014

clockevents: Adjust timer interval when frequency changes

clockevent devices in periodic mode are not updated when the frequency
of the device changes. Issue a dev->set_mode() callback which forces
the device to reevaluate the timer settings.

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Michal Simek <michal.simek@xilinx.com>
Link: http://lkml.kernel.org/r/1391466877-28908-3-git-send-email-soren.brinkmann@xilinx.com

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

parent 627ee794

kernel/time/clockevents.c

+6 −3

Original line number	Original line	Diff line number	Diff line
	@@ -443,10 +443,13 @@ int __clockevents_update_freq(struct clock_event_device *dev, u32 freq)
	{		{
	clockevents_config(dev, freq);		clockevents_config(dev, freq);

	if (dev->mode != CLOCK_EVT_MODE_ONESHOT)		if (dev->mode == CLOCK_EVT_MODE_ONESHOT)
	return 0;

	return clockevents_program_event(dev, dev->next_event, false);		return clockevents_program_event(dev, dev->next_event, false);

			if (dev->mode == CLOCK_EVT_MODE_PERIODIC)
			dev->set_mode(CLOCK_EVT_MODE_PERIODIC, dev);

			return 0;
	}		}

	/**		/**